/*
 * Copyright 2004 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using Microsoft.Extensions.Logging.Abstractions;
using NUnit.Framework;

namespace Spring.Core.IO;

/// <summary>
/// Unit tests for the ResourceConverter class.
/// </summary>
/// <author>Rick Evans</author>
[TestFixture]
public sealed class ResourceConverterTests
{
    /// <summary>
    /// The setup logic executed before the execution of this test fixture.
    /// </summary>
    [OneTimeSetUp]
    public void FixtureSetUp()
    {
        // enable (null appender) logging, just to ensure that the logging code is correct
        LogManager.LoggerFactory = NullLoggerFactory.Instance;
    }

    [Test]
    public void CanConvertFrom()
    {
        ResourceConverter vrt = new ResourceConverter();
        Assert.IsTrue(vrt.CanConvertFrom(typeof(string)), "Conversion from a string instance must be supported.");
        Assert.IsFalse(vrt.CanConvertFrom(typeof(int)));
    }

    [Test]
    public void ConvertFrom()
    {
        ResourceConverter vrt = new ResourceConverter();
        object actual = vrt.ConvertFrom("file://localhost/");
        Assert.IsNotNull(actual);
        IResource res = actual as IResource;
        Assert.IsNotNull(res);
        Assert.IsFalse(res.Exists);
    }

    [Test]
    public void ConvertFromNullReference()
    {
        ResourceConverter vrt = new ResourceConverter();
        Assert.Throws<NotSupportedException>(() => vrt.ConvertFrom(null));
    }

    [Test]
    public void ConvertFromNonSupportedOptionBails()
    {
        ResourceConverter vrt = new ResourceConverter();
        Assert.Throws<NotSupportedException>(() => vrt.ConvertFrom(new TestFixtureAttribute()));
    }

    [Test]
    [Platform("Win")]
    public void ConvertFromWithEnvironmentVariableExpansion()
    {
        string filename = Guid.NewGuid().ToString();

        // TODO : won't pass on anything other than Win9x boxes...
        ResourceConverter vrt = new ResourceConverter();
        string path = string.Format(@"${{userprofile}}\{0}.txt", filename);
        IResource resource = (IResource) vrt.ConvertFrom(path);

        string userprofile = Environment.GetEnvironmentVariable("userprofile");

        Assert.IsFalse(resource.Exists,
            string.Format("Darn. Should be supplying a rubbish non-existant resource. " +
                          "You don't actually have a file called '{0}.txt' in your user directory do you?", filename));
        Assert.IsTrue(resource.Description.IndexOf(userprofile) > -1,
            "Environment variable not expanded.");
    }

    [Test]
    public void DoesNotChokeOnUnresolvableEnvironmentVariableExpansion()
    {
        string foldername = Guid.NewGuid().ToString();
        string filename = Guid.NewGuid().ToString();

        ResourceConverter vrt = new ResourceConverter();
        string path = string.Format(@"${{{0}}}\{1}.txt", foldername, filename);
        IResource resource = (IResource) vrt.ConvertFrom(path);

        Assert.IsFalse(resource.Exists,
            string.Format("Darn. Should be supplying a rubbish non-existant resource. " +
                          "You don't actually have a file called '{0}.txt' in your user directory do you?", filename));
        Assert.IsTrue(resource.Description.IndexOf(foldername) > -1,
            "Rubbish environment variable not preserved as-is.");
    }
}
